Concrete-form hanger.



G. S. TUITB.

CONCRETE FORM HANGER.

APPLICATION FILED JAN.13, 1910.

Patented A111128, 1914.

2 SHEETS-SHEET 1.

flmf

G. S. TUITE.

CONCRETE FORM HANGER.

APPLICATION FILED JAN. 13, 1910. i

Patented A111128, 1914.

SHEETS EET 0 f n anni 1i@ f l I t UeTltOT UNITED srnrns PATENT orricu. t

GEORGE S. TUITE, OF LOS ANGELES, CALIFORNIA.

CONCRETE-FORM HANGER. 4

Locaties.

This invention relates to a device used for the purpose Aof securingcentering to beams and the like where they are embedded in concrete, andits object is to produce a device which can be applied to the centeringwhen the same is on the floor, and which will secure the centering tothe beams without posts.

Another object of the device is to produce a hanger which will be easilysecured to the under side of any beam having a flange by simply turningthe hanger with a hammer or other implement of like character.

Another object of the invent-ion is to produce a device which willalford means to secure reinforcing rods under the flange of the beam forholding the mass of concrete thereto.

Other objects of the invention will appear as the description proceeds.

In the drawings, in which the Same numeral of reference is applied tothe same portion throughout the several views. Figure 1 is an end Viewof a beam embedded in a concrete mass showing the hanger and thecentering in place. Fig. 2 is a plan view of a portion of the same beamWithout the concrete showing the posit-ion of the hanger with respect tothe beam. Fig. 3 shows the hanger as itlooks when at right angles withthe beam and ready to be turned so that its hooks will pass over thebott-om S is an end view of a beam showing a hanger used for supportingstringers. Fig. 9 is an end view of a beam showing the hangerillustrated in Fig. 8 with the stlrrup turned Specification of LettersPatent.

Patented Apr. 28, 1914.

Application led January 13, 1910. Serial No. 537,889.

at a right angle to the previous ligure. Fig. 10 1s a plan View of ahanger having hooks for the suspension of reinforcing rods. Fig. l1 is aside elevation of a beam and said hanger. F1g., 12 is an end view of abeam and one of said hangers, and Fig.' 13 is a plan view of a portionof a form and a beam.

illustrating the use of hangers having only one hook.

The hanger comprises a plate l having a slot 2 at the center thereof,the ends of said plate being bent upwardly as shown at 3 so they willhook over the bottom flange 4 of a beam 5, when the plate is turned asshown in Fig. 2. Secured to the plate l is a centering boX 6, a bolt 7being passed through a slot near the center of the.

plate 1. It will be noted that itisnecessary to make the greatestdistance between the pointsl of the hooks a small amount greater thanthe width of the beam in order that. the hooks may be placed, thereon,since the hooks must be secured to the centering boX and the latter mustbe placed in position after the beams have been fabricated and rivetedin place. It will be noted that the hooks 'are placed at such an anglewith respect to the axial plane of the body of the hanger that they willgive the greatest possible bearing when it is turned at a considerableangle therewith, as shown in Fig. 2.

The manner of operatingthe hanger is vas follows: The center boX is madein the usual manner, a number of the hangers being bolted to the bottomthereof, all of the hangers being in substantially the same line f andturned to the position, with respect to the lengt-h of the beam, shownin Fig. 4.-. rlhe box is then raised into proximity to the beam and aworkman takes a hammer or other implement. and drives the hangers aroundso their hooks pass over the bottom flange in the manner shown in Figs.l and 2, and sincethe hangers are bolted tightly to the centering theywill not readily turn back and come off the flange, but hold thecentering iirmly in place. Since almost all beams are more or lesscrooked when'they have been placed in a building they require the hooksto be more or less adjustable, said adjustment being accomplished byhaving the hole through which the securing bolt passes slotted, thuswhen the hook is turned aro-und so its hooks pass over the flange of.the beam they can also move longitudinally a small amount so that bothhooks will be aol 'lov

tight against the edges of the ange. When it becomes necessary to removethe concrete centering all that it is necessary do is to unscrew thebolt 7 when the entire center box may be removed, the hanger being leftembedded in the concrete mass.

It is sometimes desired to support the centering very close to thebottom of the beam in which event the hanger may be made with 'the bodyportion quite fiat, asV

shown in Fig. 5, a small dependingloop 8 being formed at the center4 toprovide the necessary space for the bolt nut. This hanger may be removedfrom the beam by simply breaking a small amount of the concrete awayfromthe beam, or the bolt may be unscrewed from the nut as in .the othercase.

When it is desired to use the hangers for supporting stringers for falsework, as in making concrete vslabs for sidewalks, etc., 1t may be foundconvenient to provide the hanger with a stirrup 18 as shown in Figs. 8and 9, said stirrups being supported from the hook hanger in such amanner as to rotate to permit the use of a supporting Stringer either inline with the beam, as shown in Fig. 8, or transversely of the beams, asshown in Fig. 9. The stirrups may be made larger than the stringers andthey may be used as often as may be necessary to support the desiredfalse work.

It is often desirable-to insert reinforcing rods in the concrete massbelow the bottom flange of the beam, in which event a modified form ofthe hanger may be used. This form is shown in Figs. 10, 11 and 12. Thebody of the hanger is precisely the same as the first form, and in factwith that form of hanger rods may beinserted as shown at 12, but sinceit is more desirable to support the said rods at a point close to theouter corner of the mass of concrete, depending hooks 10 are formed inthe plate, and in the depending flange 10 there are av series of holesvthrough which the rods 11 maybe inserted, if desired.

Since the hanger may be used with open false work at times it becomesnecessag to provide some means for preventing it om being accidentallydisplaced from the bottom ange of the beam. This means comprises thewasher 15 having the prongs 16 and wedges 17, the prongs adapted to bedriven into the wood of the false work to fix the position of the washerwith respect to said false work. The hanger is then placed on the top ofthe washer and when it is driven around into the desired position thebody of the hanger will pass over the top of the wedges and cannot beturned back, although, of course, the bolt may be removed in the mannerpreviously indicated. It will also be clear that it is possible to makethe hanger with a hook at one end only as indicated in Fig. 13, thehooks being bolted to the top of the bottom of the centering 20 -at 22,while the hooks are forced around over the bottom flange of the beam asshown in said gure. In this case the centering affords the means wherebythe entire series are held together and act as a single rigid body. Y

In Figs. 14 and 15 there is shown a slightly modified form of theinvention, the centering being secured to the beams by means of a pairof hooked rods 24, said rods having a portion 25 which extends at rightangles withthe length of the rod and which is held in contact with thebottom of the centering by means of a bolt the same as is used in theother forms of the invention, the end 2G of the rod being turned up toprevent the `rod from being Worked out from under the washer 27. Thedifference between this form of the invention and the first form lies inthe fact that the movement of the rod to pass over the bottom iange ofthe beam is entirely in a vertical plane and not in a horizontal planeas in the former cases.

It is to be noted that in each form of the invention the nut leftembedded in the concrete may be used for the purpose of hanging pipes,shafting and other objects from it as may be desired, although, ofcourse,- with the form shown in Fig. 13 the entire load would be on theconcrete and not on the metal of which the hooks 21 are made, since thehook is passed over the beam at one end only.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United. States is as follows:

. 1. A hanger for holding concrete centering comprising a plate havingan opening therein near the center thereof and having a pair of hooks atthe ends thereof, a bolt projecting from said centering and extendingthrough said opening to serve as a pivot upon which the plate may beswung, the hooksbeing turned at an acute angle to the axial plane of theplate, one in one direction and the other in` the other direction,substantially as described.

' 2. A hanger for holding concrete centering, comprising a centeringbase, plates pivotally secured to said base and centrally thereof andeach provided with a terminal hook turned at an acute-angle to the axialplane of the plate. y

3. A support for holding concrete centering to'flanged beams, comprisinga centering boX, pivot bolts secured to and projecting from the centralportion thereof, metal hangers spaced apart and having central aperturesthrough which said pivot bolts project, said hangersl having'terminalhooks turned inwardly at an acute angle to the axial plane of the plate,and reinforcing members carried by said hangers, whereby the entirecentering support may be assembled before being positioned over the beamand then locked to the beam by swinging the hangers upon their pivotsinto locked engagement with the beam.

4. A support for holding concrete centering comprising a plate providedat either end with an inwardly directed hook for grasping the oppositesides of a anged beam respectively, and means for centrally pivotingsaid support to the centering to permit said hooks to swing into lockingengagement with the beam, said vpivotal means 1s being adapted to locksaid posts aga-inst subsequent angular movement.

In testimony whereof I have hereunto set my hand this 28th day of JuneA. D. 1909, in the presence of the two subscribed 20 witnesses.

GEORGE S. TUITE.

Witnesses:

.WEYMOUTH CRoWELL, J. F. CHURCH.

